Merge pull request #5491 from arief-hidayat/master

fix(script): follow redirected URL of github latest release

scripts/get

@@ -77,16 +77,16 @@ verifySupported() {
 
 # checkDesiredVersion checks if the desired version is available.
 checkDesiredVersion() {
-  # Use the GitHub releases webpage for the project to find the desired version for this project.
-  local release_url="https://github.com/helm/helm/releases/${DESIRED_VERSION:-latest}"
-  if type "curl" > /dev/null; then
-    TAG=$(curl -SsL $release_url | awk '/\/tag\//' | grep -v no-underline | grep "<a href=\"/helm/helm/releases" | head -n 1 | cut -d '"' -f 2 | awk '{n=split($NF,a,"/");print a[n]}' | awk 'a !~ $0{print}; {a=$0}')
-  elif type "wget" > /dev/null; then
-    TAG=$(wget -q -O - $release_url | awk '/\/tag\//' | grep -v no-underline | grep "<a href=\"/helm/helm/releases" | head -n 1 | cut -d '"' -f 2 | awk '{n=split($NF,a,"/");print a[n]}' | awk 'a !~ $0{print}; {a=$0}')
-  fi
-  if [ "x$TAG" == "x" ]; then
-    echo "Cannot determine ${DESIRED_VERSION} tag."
-    exit 1
+  if [ "x$DESIRED_VERSION" == "x" ]; then
+    # Get tag from release URL
+    local latest_release_url="https://github.com/helm/helm/releases/latest"
+    if type "curl" > /dev/null; then
+      TAG=$(curl -Ls -o /dev/null -w %{url_effective} $latest_release_url | grep -oE "[^/]+$" )
+    elif type "wget" > /dev/null; then
+      TAG=$(wget $latest_release_url --server-response -O /dev/null 2>&1 | awk '/^  Location: /{DEST=$2} END{ print DEST}' | grep -oE "[^/]+$")
+    fi
+  else
+    TAG=$DESIRED_VERSION
   fi
 }